Knockdown rack



M. BALDWIN KNOCKDOWN RACK July 9, 1968 2 Sheets-Sheet 1 Filed April 26, 1966 FIG.1

Poooo oeooaooe INVENTOR. Marion Baldwin BY ATTORNEY July 9, 1968 M. BALDWIN 3,391,797

KNOCKDOWN RACK Filed April 26, 1966 2 Sheets-Sheet 2 FIG.2

FIG.3

24r- -24 24 I I United States Patent 3,391,797 KNOCKDOWN RACK Marion Baldwin, Rockville, Md., assignor to Albert Voigt Industries, Inc., Hicksville, NY. Filed Apr. 26, 1966, Ser. No. 545,474 Claims. (Cl. 211-177) ABSTRACT OF THE DISCLOSURE This disclosure is directed to a rack construction comprising a frame which is adapted to be knocked down between an operative erected position and a folded, inoperative position. The frame includes opposed end sections connected by an intermediate section. The respective end sections each have an intermediate portion and opposed end portions hingedly connected to each end of the intermediate portion. The intermediate porti n of the respective end sections is interconnected by the interconnecting section. Each intermediate portion of each end section includes an intermediate upright on which bracket means are adjustably disposed and a shelf having one edge thereof pivotly supported on the bracket means for movement between operative, horizontal position and inoperative, vertical position.

This invention relates in general to a rack construction, and more specifically to an improved rack which is specifically constructed and arranged so that it can be readily knocked down between an operative erected posi tion and a folded inoperative position.

The rack construction of this invention is particularly adapted for use in department stores or retail outlets and the like for enlarging or expanding the display counters or shelves exhibiting the stores merchandise during busy holiday buying seasons, as for example Christmas, Easter and the like and/ or during special sale days.

Department stores are initially arranged with permanent display counters or shelves which are suitably placed or located in accordance with the available floor space of a particular department or store. However, during particularly busy sales seasons, as for example, Christmas, Easter and/ or during special days, the normal display counter or shelves in a given department of a department store is usually not suflicient to effectively display the increased volume of merchandise generally available at such times and/ or present the necessary satisfactory displays for increasing a customers buying incentive during such sales days.

Accordingly, makeshift displays and/or stands have been resorted to in an effort to accommodate the volume of business during these busy sales days. It has been experienced that such temporary displays and/or counters were not satisfactory in that a considerable amount of time and effort was required to erect the same, and thereafter to remove the same upon completion of the sales or sale season. Also, many stores lacked the storage area in which such temporary display counters and/or racks could be stored during off season periods, and/or between sales. Further, the erection and disassembly of such temporary display units and/ or racks for use during busy sales days required experienced personnel such as carpenters or other tradesmen. Consequently, the use of such temporary display counters and/ or racks constituted considerable problems and added expense to the storekeeper.

It is therefore an object of this invention to provide a relatively simple rack or display stand which can be readily knocked down between an erected operative position and a folded inoperative position.

Another object of this invention is to provide a readily 3,391,797 Patented July 9, 1968 knock down rack which is readily simple in construction, positive in operation, and which can be readily inexpensively manufactured.

Another object of this invention is to provide an improved knock down rack construction which is sturdy and rugged in either the erected position or the knock down inoperative position.

It is another object of this invention to provide an improved knock down rack construction requiring relatively little storage area in the knock down position there f.

It is another object of this invention to provide an improved readily knock down rack or display unit with a plurality of shelves which remain physically attached to the frame portion of the rack in a manner which permits the shelves to be readily erected between an operative position and an inoperative position with a minimum of effort and without the use of any tools.

It is another object of this invention to provide a knock down rack construction in which the shelves attached thereto are free to be adjusted vertically at the will of the operator, and which shelves can be so adjusted without the use of any tools, and with a minimum of effort and a maximum of ease.

Another object of this invention is to provide an improved rack construction comprising a readily knock down frame and connected shelves arranged to expand the available display area of a given store or retail outlet.

The foregoing objects are attained by a knock down rack which comprises essentially of a frame means which is adapted to be knocked down between an operative erected position and a folded inoperative position. A plurality of shelf means are attached to the frame means by means which enable the respective shelf means to be pivoted between an operative horizontal position in the erected position of the frame means and an inoperative stowed position in the folded or knock down position of the frame means. Means are also provided for rendering the shelf means vertically adjustable to assume any desired relative spacing therebetween in the operative position of the rack.

In accordance with this invention, the frame means comprises essentially of a first section for supporting one end of the respective shelf means and a second section hingedly connected to the opposed ends of the first section, whereby the second sections define the means by which the other end of the shelf is supported in the erected position of the rack. The first section of the frame means includes opposed, spaced apart, uprights with interconnected stringers to define a rectangularly shaped frame section. Cross pieces are connected to each corner portion of the rectangular frame section. The second frame sections include end portions hingedly connected to each end of the cross pieces. The respective end portions include an upright corner leg member having spaced lateral extensions which are hingedly connected to the ends of the cross pieces. Thus, the respective end portions are free to pivot between an operative extended position to define opposed end supports for the rack and an inoperative folded position relative to the rectangular shaped frame section.

A plurality of shelf means are operatively disposed on the frame means for movement between an operative and inoperative position. The means for connecting the shelf means to the first frame section include a pair of opposed channel members connected to the opposed uprights of the rectangular frame section. Each channel member is provided with a plurality of apertures spaced longitudinally thereof. Bracket means for supporting one end of the shelves are adjustably disposed along the channel. Accordingly, the bracket means includes a slider portion which is arranged to slide within said channel to effect vertical adjustment of the shelf means supported therein. A cross arm connected to the slider defines the bearing support for pivotally supporting one end of the shelves thereon. Means are provided for fixedly securing the bracket slider to the channel member in the adjusted position thereof.

Cooperating means are provided on the other end of the shelf means and the adjacent end portions of the frames for supporting the other end of the shelf in the operative position of the rack. These cooperating means include a series of apertures spaced longitudinally of the respective corner leg member which cooperates with a slide latch pin connected to the edge of the shelf. In the operative position of the shelf, the respective latch pins thereof are adapted to engage in one of the apertures of the corner leg member to horizontally support the shelf in the operative position. Accordingly, by adjusting the sliders supporting one edge of the shelf and positioning the latch pins in the respective apertures spaced along the respective leg members of the rack for supporting the other end of the shelf, the respective shelf means can be readily adjusted.

To knock down the rack from its operative erected position, an operator merely has to disengage the slide latch pins from the outboard end of the self thereby permitting the other supported end of the shelf to be pivoted about its bearing support brackets to a vertical position against the rectangular frame section of the rack. With each of the shelf means vertically stowed to the knock down position thereof, the opposed end portions of the frame are then folded inwardly wherein the rack assumes a compact, knock down, position which can be readily stored in a minimum of space without the necessity of effecting complete disassembly of the frame components and of the shelf means therefrom. Accordingly, the rack can then be transported in its knock down position to a suitable storage area until use thereof is again desired.

A feature of this invention resides in an improved rack construction which is relatively light in weight, and rugged of construction in either the operative erected position thereof or the inoperative knock down position thereof.

Another feature of this invention resides in the provision that the improved rack construction can be readily knocked down from its operative position to its inoperative position with a minimum of effort and a maximum of ease, and wherein the erection or knock down thereof can be accomplished without the need or use of any hand tools.

Another feature of this invention resides in the provision of a knock down rack construction which in the operative position thereof defines an expanded selling unit, and which in the inoperative knock down position thereof, has its overall measurements greatly reduced to provide ease of storage.

Another feature of this invention resides in the provision of a readily knock down rack construction wherein the end portions and the respective shelf means can be readily knocked down without effecting total disassembly or disconnection of any portion of the rack from one another.

Another feature of this rack construction resides in the provision wherein the shelves may be readily vertically adjustable in either position of the rack.

Another feature of this invention resides in the provision of the bearing bracket construction which renders the shelf means readily adjustable and which allows the shelf to be stowed in the knock down position thereof.

Other features and advantages will become more readily apparent when considered in view of the drawings and specification wherein:

FIGURE 1 is a perspective view of the improved rack construction of this invention, which for purposes of illustration have portions of the rack shown in the operative, erected position thereof; and other portions of the rack shown in a knock down position thereof.

FIGURE 2 is a schematic end view of the rack construction illustrating the same in the operative erected position.

FIGURE 3 is a schematic end view of the rack construction of the instant invention arranged in which the solid line showing illustrates the knock down position thereof, with the broken line showing the relative overall dimensions of the rack in the operative position thereof.

FIGURE 4 is a detail of construction taken along line 4-4 on FIG. 1.

FIGURE 5 is an enlarged detail view of the bearing support bracket for the shelf means.

FIGURE 6 is an enlarged detail showing of the bearing support for the shelf means, and illustrating the mannor in which the shelf means is supported thereon in both the operative and inoperative position thereof.

FIGURE 7 is a plan view of FIG. 6 and having parts thereof shown in section.

FIGURE 8 is a detail of construction illustrating the means for supporting the lowermost shelf means of the rack.

FIGURE 9 is an end view of FIG. 8.

FIGURE 10 is a detail of construction illustrating the bearing means for one end of the shelf means.

FIGURE 11 is a detail of construction illustrating the bearing means for the upper and lowermost shelf means of the instant rack construction.

FIGURE 12 is a detail construction illustrating the means utilized for supporting the outboard edge of the intermediate shelf means.

Referring to the drawings, there is shown in. FIG. 1 the improved, knock down, rack construction 20 of the present invention. As shown therein, the rack construction comprises a frame means 21 which is adapted to be knocked down between an operative erected position as seen in FIG. 2 and an inoperative folded or knock down position as noted in the solid lines of FIG. 3. A plurality of shelf means are attached to the frame means in the manner hereinafter described which permits the respective shelf means to be pivoted between an operative horizontal position as seen in FIG. 2 to an inoperative Vertically stowed position as noted in FIG. 3 in the solid line showing therein. The respective shelf means include an uppermost and lowermost shelf means 22, 23 and one or more intermediate shelf means 24.

The frame means 21 of the rack comprises a pair of opposed upright members 25, 26 which are interconnected by a pair of opposed longitudinally extending stringer members 27, 28 to define a rectangularly shaped first frame section 29. Connected to the respective corner portions of the rectangular frame section 21 is a cross piece 30, which is disposed substantially normal to the upright members 25, 26 and to the interconnecting stringers 27, 28 therebetween. As best seen in FIG. 1, the cross pieces 30 on each end of the frame section define with the interconnected upright member a substantially I shaped intermediate portion of the end sections of the rack.

Connected to each end of the respective cross pieces 30 is a pivotally connected end portion 31. Each end portion includes an upright member which defines a supporting leg member 32 of the rack. Connected to the leg member 32 of each end portion are a pair of laterally extending sections 33 by which the end portions 31 are respectively connected to the cross pieces 30. A hinge means 34 interconnects the respective lateral extensions 33 of the end portion to the cross piece 30. Accord ingly, it will be noted, as seen in FIG. 1, that the respective end portions 31 of the frame are each free to pivot between an operative erected position wherein the opposed end portions 31 of each end of the frame are coplanarly disposed and in a knock down position wherein the respective end portions 31 are pivoted relative to the intermediate end portion of the frame. As best seen in FIGS. 2 and 3, the overall dimension or width of the rack 20 is substantially reduced when in the knock down position thereof.

It is preferred that the frame sections 21 and 31 and/ or portions thereof'be formed of a tubular metal construction. However, it will be readily understood that the frame may be constructed of any suitable bar or rod stock or other structural members.

In accordance with this invention, a plurality of shelf means are operatively connected to the frame 21 for providing the necessary area for merchandise to be displayed thereon. In the illustrated form of the invention, each side of the rack 20 is provided with four shelf means which include an uppermost shelf 22, a lowermost shelf 23 and a plurality of intermediate shelves 24. It will be understood that while the instant invention is illustrated as utilizing only four shelves on each side of the frame 21, it will be readily understood and appreciated that any convenient number of shelves may be utilized.

In accordance with this invention, the intermediate shelves 24 are rendered readily adjustable with respect to the frame 21. As best seen in FIGS. 1 and 11, it will be noted that the respective uppermost shelf 22 and lowermost shelf 23 are pivotally supported between the opposed upper and lower cross pieces 30 by means of a trunnion or pin connection for movement between an operative position and an inoperative stowed position.

Referring to FIG. 11, the respective upper or lower shelves 22, 23 are each provided with a trunnion or hearing pin 35 projecting beyond the ends thereof. The respective opposed upper and lower cross pieces 30 adjacent the central rectangular frame section of the rack are provided with an aperture 36 for receiving the bearing pin 35. Accordingly, the inboard edge of the upper and lowermost shelves 22, 23 are therefore free to pivot relative to the frame section 21 of the rack between an operative horizontal position and a vertically stowed position. In the knock down position of the rack (FIG. 3), the respective uppermost shelves 22 are pivoted so as to be dependently supported between the respective cross pieces 30 defining the proposed ends of the rack. The lowermost shelves 23 are pivoted upwardly so as to be disposed adjacent the rectangular central frame section.

The outboard edge of the respective top and bottom shelves 22, 23 in the operative position thereof are supported on suitable projections which extend outwardly from the end portion 32 of the frame means. As best seen in FIG. 4, the outboard support of the uppermost shelf means 22 comprises a lug or projection 37 which is connected to the upper extension 33 of the end portion 31. Referring to FIG. 4, it is to be noted that the lug or projection 37 supporting the outboard end of the shelf 22 is detachably secured to the upper lateral extension 33 by means of a screw fastener 38. Accordingly, by loosening the screw fastener 38, the support projection 37 can be pivoted so as to underlie the extension 33 thereby permitting the shelf 22 to be pivoted from its operative horizontal position to its stowed position of FIG. 3.

The support for the outboard edge of the bottom shelf 23 in turn comprises an angle member 40 which has its vertical leg portion 41 fixedly secured to the upright leg member 32 of the frame and which has its other leg portion 42 extended inwardly of the frame section. Accordingly, it will be noted that in the erected position of the rack, bottom shelf 23 pivots to its normal operative position and will rest on the inturned leg portion 42 of the respective support angles 41.

The inboard edge portion of intermediate shelves 24 are supported between opposed bracket means 43 which are rendered adjustably disposed with respect to the end uprights of the frame means. Referring to FIGS. 1, 6 and 7, it will be noted that a C shaped channel member 44 is connected to the inside face of the respective uprights 25, 26. As shown, the channel member 44 has its back or web portion 45 disposed in back to back relationship with respect to the uprights 25, 26. The opposed leg portions 45A of the channel extend inwardly of the rack, and the outer end portions 45B of the respective channel leg portions are inturned to define a T shaped slot 46.

' Referring to the detail construction of the channel 44 illustrated in FIGS. 5 and 6, it is to be noted that the web portion or back 45 of the channel is provided with a plurality of apertures 47 longitudinally spaced therealong. The bracket means 43 for supporting the intermediate shelves 24 are slidably disposed within the channel member 44. As shown, the bearing bracket means 43 comprises a slider 48 having opposed grooves 48A for receiving the internal ends 45B of the channel 44 whereby the same is free to slide therealong. A set pin 49 is reciprocally mounted in an opening formed in the slider 48. A flange 50 formed on the pin 49 functions as a stop for a coil spring 51 disposed between it and the back of the slider. The inner end portion of the pin 49 is adapted to be received in one of the apertures 47 formed in the web portion of the channel means when the same is disposed in alignment therewith. Accordingly, it will be noted that the slider 48 can be vertically adjusted and set along the channel by engaging the latching pin 49 in one of the apertures 47 provided therein. The spring 51 disposed about the pin will function to positively maintain the latching pin 49 in engagement with an associated aperture 47. Accordingly, to release the pin 49 from the aperture 47, an operator merely has to pull the set pin 49 outwardly to permit the pin to be Withdrawn from the aperture 47. In doing so, the spring 51 is compressed. Accordingly, the slider 48 of the bracket may be readily positioned along the height of the frame and reset automatically upon release of the pull on the pin 49.

Connected to the front of the slider 48 is a cross arm 52 which is the bearing support for the inner edge of the intermediate shelves 24. As shown, the cross arm 52 of the bearing bracket may be provided with either an elongated slot and/or aperture 53 which is adapted to receive a hearing or pivot pin 54 connected to the inboard edge 'of the respective intermediate shelf means 24. As

shown in FIG. 10, the pivot pins 54 extend laterally of an angle 55 secured to the undersurface shelf 24. The pins 54 thus support the shelf 24 between the opposed cross arms 52 of the bracket means 43. As noted in FIG. 6, it will be noted that the shelf means 24 so supported between the slidable brackets 43 is free to pivot between a vertically stowed inoperative position as indicated by the solid line in FIGS. 3 and 6, and an operative horizontal position as indicated by the dot-dash lines of FIG. 6.

In accordance with this invention, means are connected to the outboard edge portion of the respective intermediate shelves 24 to form a bearing support for the outboard edge thereof in the operative position thereof. Accordingly, the outboard supports for shelves 24 comprises a slide latching pin which is reciprocally mounted in a suitable slide or housing 61 connected to the undersurface of the shelves 24 as is best illustrated in FIG. 12.

The respective corner leg member 32 of the end portions 31 of the frame are each provided with a series of vertically spaced apertures 62 which are adapted to receive the end of the latching pins 60 when the latter is extended to engage therewith. Accordingly, with the slider or hearing bracket 43 adjustably disposed at the proper level along the channel uprights 44 and the shelf 24 rotated to an operative horizontal position, it will be noted that the slide latching pin 60 connected to the outboard edge of the shelf can be readily extended to engage with one of the aligned apertures 62 disposed in the leg portion of the frame member. Thus, in the operative position, intermediate shelves 24 are positively secured and supported by and between the cross-arms 52 of the slide brackets and the operative engagement of the slide latch pins 60 with the apertures 62 of the leg members 32.

From the foregoing description, it will be noted that in the erected position of the frame, the respective shelves 22,23 and 24 are horizontally supported and vertically spaced to accommodate the display of various merchandise thereon. Accordingly, for the additional shelf space desired, it will be readily understood that the rack can be utilized with either both of its end portions totally ex tended and/ or with only one of the end portions optionally extended. The versatility and utility of the rack is thus greatly enhanced in that a store-keeper or operator can use the same in accordance with his needs.

In the knock down position, the rack 20 assumes a minimum of storage space and can be readily stored until needed. Another important feature of this invention resides in the provision that in either the erected or knock down position, it is not required or necessary for the shelf means to be removed from the frame means. Accordingly, the entire rack may be used and/or stored with all the component parts thereof in position for immediate assembly and/or disassembly without the need of any tools.

The-rack can be quickly and rapidly erected with a minimum of effort and maximum of ease. Also, the entire rack construction 20 is relatively rugged and solid in construction and can be fabricated with a minimum of component parts.

To knock down the rack from its erected position, all that is required is for the outboard support means 37 for the uppermost shelf 22 to be rotated or removed to permit the shelf 22 to be pivoted about it and bearing pins 35. The respective intermediate shelves 24 are readily collapsed by withdrawing the latch pin 60 from the latching apertures 62 of the leg portion 32 thereby permitting the shelf 24 to pivot to its vertical inoperative stowed position as indicated in FIG. 6. The bottom shelf 23 is merely pivoted in an upward direction about its supporting trunnions 35. With the respective shelves thus collapsed or disposed in the inoperative position, the respective end portions 31 of the rack can then be readily folded inwardly as noted in FIG. 1. In this manner, the overall dimension of the rack is substantially reduced, therefore enabling the rack in its collapsed position to be stored in a limited storage area, with all of the respective component parts thereof maintained in an inoperative, but connected relationship with respect to .one another.

To erect the rack described, it is only necessary to unfold the respective end portions 31 to their erected expanded position, and to pivot the shelves accordingly so that the outermost end portions thereof are supported between the opposed end portions 31 of the rack.

If desired, the respective leg portions 32 of the rack :may be provided with casters or wheels (not shown) to facilitate movement of the rack over a supporting surface.

With the rack constructed and described, it will become readily apparent that the display area and/or counter space of a given department store or retail outlet can be greatly expanded during special buying holidays and/or sales, and which during normal shopping days can be readily knocked down and placed in storage with a minimum of effort and a maximum of ease.

While the instant invention has been described with respect to a particular embodiment thereof, it will be readily appreciated and understood that variations and modifications may be made without departing from the spirit or scope of the invention.

I claim:

1. A knockdown rack comprising:

a frame means adapted to be knocked down between an operative erected position and a folded knockdown position,

and a plurality of shelf means attached to said frame means,

and means for connecting said shelf means to said frame so that in the operative erected position .of said frame,

said shelf means are operatively disposed and in the folded knockdown position of said rack said shelf means are inoperatively disposed,

said frame means including a pair of opposed end sec tions and an interconnecting section for connecting said end sections together,

each of said end sections including an intermediate portion fixedly connected to said interconnecting section and opposed end portions hingedly connected to each end of said intermediate portion whereby the respective opposed end portions of the respective end sections are adapted to be angularly folded with respect to the intermediate portion in the knockdown position of said rack and disposed in suhstantialalignment with said intermediate portion in the erected operative position of said rack,

wherein the respective intermediate portion of each of said end sections includes an intermediate upright member, and said means for supporting said shelf means including a bracket means connected to said upright member, and means for pivotally supporting one edge of said shelf means on said bracket means for movement between an operative horizontally disposed position in the erected position of said frame means, and an inoperative vertical position in the knockdown position of said frame means.

2. The invention as defined in claim 1 and including means for detachably supporting the other end of said shelf means between the opposed end portions of the respective end sections in the erected position of said frame means.

3. The invention as defined in claim 2 including means for rendering said bracket means vertically adjustable.

4. The invention as defined in claim 3 wherein said vertically adjustable means includes a C shaped channel connected to said upright, and said bracket including a slider slidably adjusted along the length of said channel, and means for fixedly securing the slider of said bracket means to said channel in the adjusted position thereof.

5. The invention as defined in claim 4 wherein said latter securing means includes a plurality of apertures vertically spaced along the upright of said intermediate portion, and a pin means connected to said slider for engaging in one of said apertures for maintaining said slider vertically positioned along said upright.

6. A knockdown rack comprising:

a frame means adapted to be knocked down between an operative erected position and a folded knockdown position,

and a plurality of shelf means attached to said frame means,

and means for connecting said shelf means to said frame means so that in the operative erected position of said frame, said shelf means are operatively disposed, and in the folded knockdown position of said rack said shelf means are inoperatively disposed,

said frame means comprises a central frame section formed of rectangularly disposed members including a pair of spaced apart uprights and opposed interconnecting stringers,

a cross piece connected at each corner of said central frame section to extend to either side of said upright members,

end portions including an upright corner leg member for said frame having spaced lateral extension connected to said leg member,

and means hingedly connecting the spaced lateral extensions of said end portions to the opposed ends of said cross pieces whereby said end portions are free to pivot relative to said cross pieces between operative erected position of said frame and inoperative knockdown position of said frame,

wherein said plurality of shelf means includes a top shelf means, a bottom shelf means and an intermed ate shelf means, and means for effecting vertical adjustment of said intermediate shelf means.

7. The invention as defined in claim 6 wherein said latter means includes:

(a) a channel connected to the respective spaced uprights of said central frame section,

(b) and a bracket for supporting a shelf means thereon slidably adjusted along each of said channel for supporting therebetween said shelf means, and means for fixedly securing said bracket along said channel in the adjusted position thereof.

8. The invention as defined in claim 7 wherein said bracket supports the inner edge of said shelf means for movement between operative and inoperative positions, and complementary means connected to said shelf means and the leg members of said end portions for supporting the opposed edge of said shelf means in the operative position thereof.

9. The invention as defined in claim 8 wherein said complementary means includes a series of vertically spaced apertures formed in the leg members of the respective end portion, and a slide latch pin connected to the end of said shelf means adapted to engage within an appropriate aperture of said leg means to support said shelf means in the operative position thereof.

10. A readily knockdown rack comprising:

(a) a frame means,

(b) said frame means including opposed spaced apart uprights and opposed spaced apart stringers interconnected between said uprights to define a rectangularly shaped frame section,

(c) cross pieces connected to each corner of said rectangular frame section, said cross piece being disposed normal to the adjacent uprights and connected stringers,

(d) end portions hingedly connected to each end of said cross pieces,

(e) each of said end portions including an upright corner leg member having spaced lateral extensions connected thereto,

(f) means hingedly connecting said latter extensions to said cross pieces whereby said respective end portions are free to pivot between operative extended position and inoperative folded position,

(g) a plurality of shelf means,

(h) means for connecting each of said shelf means to said frame means for movement between operative and inoperative position,

(i) said latter means including a channel member connected to the opposed uprights,

(j) said channel member having a web portion formed with a plurality of apertures spaced longitudinally thereof, and opposed flanges connected having inturned end portions connected to said web,

(k) a bracket means adjustably disposed along said channel member for supporting one end of the shelf means,

(1) said bracket means including a slider arranged to slide along said channel member,

(m) a cross arm connected to said slider, said cross arm having means for pivotally supporting the shelf means thereon,

(n) means for securing said slider in adjusted position along said channel member,

(0) cooperating means on said shelf means and end portion of said frame for supporting the other end of the shelf means in the operative position,

(p) said latter means including a series of apertures spaced longitudinally of the respective leg member, and

(q) a slide latch pin connected to said shelf means adapted to engage with the apertures in said corner leg member to support the shelf means thereon.

References Cited UNITED STATES PATENTS 1,986,078 1/1935 Spang 108-111 2,680,522 6/1954 Temple 21l149 XR 3,045,831 7/1962 Pendergrast 108-111 XR 3,138,122 6/1964 Mondineu 108-412 3,200,961 8/1965 Kolster et al 211-148 ROY D. FRAZIER, Primary Examiner.

CHANCELLOR E. HARRIS, Examiner.

W. D. LOULAN, Assistant Examiner. 

